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Fat Emulsion
Pronunciation
U.S. Brand Names
Generic Available
Synonyms
Pharmacological Index
Use
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Overdosage/Toxicology
Stability
Mechanism of Action
Pharmacodynamics/Kinetics
Usual Dosage
Monitoring Parameters
Dental Health: Local Anesthetic/Vasoconstrictor Precautions
Dental Health: Effects on Dental Treatment
Patient Information
Nursing Implications
Dosage Forms
References

Pronunciation
(fat e MUL shun)

U.S. Brand Names
Intralipid®; Liposyn®; Nutrilipid®; Soyacal®

Generic Available

Yes


Synonyms
Intravenous Fat Emulsion

Pharmacological Index

Caloric Agent


Use

Source of calories and essential fatty acids for patients requiring parenteral nutrition of extended duration


Pregnancy Risk Factor

B/C


Contraindications

Pathologic hyperlipidemia, lipoid nephrosis, known hypersensitivity to fat emulsion and severe egg or legume (soybean) allergies, pancreatitis with hyperlipemia


Warnings/Precautions

Use caution in patients with severe liver damage, pulmonary disease, anemia, or blood coagulation disorder; use with caution in jaundiced, premature, and low birth weight children


Adverse Reactions

>10%: Local: Thrombophlebitis

1% to 10%: Endocrine & metabolic: Hyperlipemia

<1%: Cyanosis, flushing, chest pain, nausea, vomiting, diarrhea, hepatomegaly, dyspnea, sepsis


Overdosage/Toxicology

Too rapid administration results in fluid or fat overloading to cause dilution of serum electrolytes, overhydration, pulmonary edema, impaired pulmonary diffusion capacity, metabolic acidosis

Treatment is supportive


Stability

May be stored at room temperature; do not store partly used bottles for later use; do not use if emulsion appears to be oiling out


Mechanism of Action

Essential for normal structure and function of cell membranes


Pharmacodynamics/Kinetics

Metabolism: Undergoes lipolysis to free fatty acids, which are utilized by reticuloendothelial cells

Half-life: 0.5-1 hour


Usual Dosage

Fat emulsion should not exceed 60% of the total daily calories

Infants and Children: Initial dose: 0.5-1 g/kg/day, increase by 0.5 g/kg/day to a maximum of 3 g/kg/day depending on needs/nutritional goals; maximum rate of infusion: 0.25 g/kg/hour (1.25 mL/kg/hour of 20% solution)

Adolescents and Adults: Initial dose: 1 g/kg/day, increase by 0.5-1 g/kg/day to a maximum of 2.5 g/kg/day of 10% and 3 g/kg/day of 20% depending on needs/nutritional goals; maximum rate of infusion: 0.25 g/kg/hour (1.25 mL/kg/hour of 20% solution); do not exceed 50 mL/hour (20%) or 100 mL/hour (10%)

Prevention of essential fatty acid deficiency (8% to 10% of total caloric intake): 0.5-1 g/kg/24 hours

Children: 5-10 mL/kg/day at 0.1 mL/minute then up to 100 mL/hour

Adults: 500 mL (10%) twice weekly at rate of 1 mL/minute for 30 minutes, then increase to 42 mL/hour (500 mL over 12 hours)

Note: At the onset of therapy, the patient should be observed for any immediate allergic reactions such as dyspnea, cyanosis, and fever; slower initial rates of infusion may be used for the first 10-15 minutes of the infusion (eg, 0.1 mL/minute of 10% or 0.05 mL/minute of 20% solution)


Monitoring Parameters

Serum triglycerides; before initiation of therapy and at least weekly during therapy


Dental Health: Local Anesthetic/Vasoconstrictor Precautions

No information available to require special precautions


Dental Health: Effects on Dental Treatment

No effects or complications reported


Patient Information

Report pain at infusion site, difficulty breathing, chest pain, calf pain, or excessive sweating.


Nursing Implications

May be simultaneously infused with amino acid dextrose mixtures by means of Y-connector located near infusion site


Dosage Forms

Injection: 10% [100 mg/mL] (100 mL, 250 mL, 500 mL); 20% [200 mg/mL] (100 mL, 250 mL, 500 mL)


References

Haumont D, Richelle M, Deckelbaum RJ, et al, "Effect of Liposomal Content of Lipid Emulsions of Plasma Lipid Concentrations in Low Birth Weight Infants Receiving Parenteral Nutrition," J Pediatr, 1992, 121(5 Pt 1):759-63.

Neuzil J, Darlow BA, Inder TE, et al, "Oxidation of Parenteral Lipid Emulsion by Ambient and Phototherapy Lights: Potential Toxicity of Routine Parenteral Feeding," J Pediatr, 1995, 126(5 Pt 1):785-90.


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